How to turbo your normally aspirated 2.3L. - Page 4 -

4 Cylinder NA and Turbo This section is for questions pertaining to stock or modified 4 cylinders, including the performance 2.3L applications

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Old 09-11-2012, 02:38 PM   #31
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Impressive information.........!!!!!!!!!!!!!!!
Thanks for sharing this with us. I am impressed with you knowledge and research. You have a great information. Even you told very pretty way. I feel like i am doing all of that when I am reading your article. I searching about it from many days. Finally I got it. Thanks again man.
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Old 10-08-2012, 11:38 AM   #32
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I just recently bought my 91 lx and I've been on the fence on what to do with it, turbo or the 5.0, then this last weekend while my friends were cruising we met this old guy that had turbo'd his 87 notchback, he let me go for a ride and I was convinced to turbo mine. Now I just need to find me a turbo coupe so I can start, thanks alot for this information.
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Old 01-21-2013, 01:16 PM   #33
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Ok so the original post has VERY good information. But i am very dissapointed in the information i have seen people putting on here who obviously have no idea what they are talking about (I created this account to help straiten out the issues).

First issues i want to address is that the 2.3 did NOT come with cast iron pistons.... Who ever told you that needs to read more. The 2.3 NA stock pistons are cast aluminum.

Second, 20 PSI is outrageous to ever even try to throw at stock NA pistons. 5-6 PSI is acceptable, but they still wont last long there.

The stock fuel pump is going to need replaced for any HP above 150.

Now for the questions that need answers...

The 2.3 cranks are ALL the same. The only 2 differences are the 2.5 crank in the rangers have a longer stroke, and every 8 plug motor uses small main journals. All 4 plug cranks were the same, carbed, FI, SVO turbo, and Turbo Coupe. Also for a bit extra, the 95 and up ranger blocks are different and can not have a distributor installed in them.
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Old 01-21-2013, 01:35 PM   #34
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MAF will work, but you need a tuner, you really should buy a tuner when you do anything to the engine. Moates has the QuarterHorse that works very well. You also have to get a larger MAF sensor.

MAF doesnt respond better to changes, it more acurately tells the amount of air coming into the engine. Speed density calculates the amount of air based off pressure (vacuum) and engine speed, combined with a programmed efficiency coefficient in the stock tune for the stock motor. These change when changes are made.

The cams out of all 2.3s are the same journal size, so in short yes you can swap them.

Just putting forged pistons in a 2.3 engine will make it ready for the boost people are talking about either. The common and cheaper to find are flat top forged pistons designed for NA. They CAN work for a turbo application, but boost is limited. You need forged turbo pistons that are dished to handle high boost.

If you plan on making any more that 120 HP the first thing you have to do is upgrade your fuel injection, or carb if youre willing to try it (ford did in 82 and 83, they scrapped it). You will need bigger injectors, and a way better fuel pump.

And for the BIG question, how much can they take? The simple answer is, with a stock 2.3 crank you can put out about 400-450 HP before the crank starts to flex. With about $4K in aftermarket mods, including a billet crank, good rods, pistons, and billet main caps, these engines have seen over 800 HP on several occasions. I cant give boost numbers, but i do know the HP capabilities.

I strongly suggest looking at if you want to learn more, i cant explain it all myself but we have a few VERY knowledgeable guys on there that know 50x more than i do about the 2.3's. One of them is an engineer. He has had many projects that have impressed me, including a mild stroked to 2.7L NA motor that put down 250 HP and almost 300 ft lbs of torque. And he currently has that same motor running supercharged making over 400 hp and over 500 ft lbs.
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Old 01-21-2013, 01:39 PM   #35
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Location: Indiana
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And for anyone who questions my knowledge, I am currently building a motor that will be running 10:1 compression, and low boost turboed. The stock turbo motors have 8:1 and stock NA motors have 8.9:1 And the T-C ECU and harness, running a quarter horse. I have been racing these motors since 2005, I know a bit about them.
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Old 03-17-2014, 09:25 PM   #36
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I have A 1993 MUSTANG FOXBODY I NEED HELP AN ADVISE IM TRYING TO ADD HP ITS A 4 BANGER let me know what I can do to it
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Old 06-06-2017, 05:04 PM   #37
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I have a 1991 4cyl turbo engine with forged pistons, a 2.5L crank, custom turbo cam, bigger valves that I am looking to sell. There is about 1500 miles on engine and I going V8. 300 up is not enough for me anymore.
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Old 06-07-2017, 07:56 AM   #38
88 orangepeel notch
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Welcome to the forum Jeff, but check the dates on the threads before replying.

We've all done it once........ONCE !!! lol
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Old 06-21-2017, 05:16 AM   #39
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very useful, thanks.
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